London Mayor Boris Johnson has said it is "completely wrong" to blame the killing in Woolwich to Islam and "equally wrong" to try to draw any link between the incident and British foreign policy.
Speaking ahead of this morning's COBRA meeting, he added the blame lies with the "warped and deluded" mindset of the people responsible.
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The day will get off to a bright but chilly start, with a few mist patches in rural areas. Showers will spread inland throughout the day.
Twenty-one historic pubs have been listed for protection by the government as part of a campaign to preserve Britain's best watering holes.
Scientists have unveiled high-tech plans to preserve ancient sites in the Middle East at risk of destruction by the so-called Islamic State.